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This corresponds to a study where the questionnaire has already been validated using classical methods (face validity, reliability, structure validity...), but not using an IRT model.
This test has already been validated by the European Center for the Validation of Alternative Methods (Genschow et al. 2004).
2 3 This means that if an instrument is used repeatedly and achieves the same results throughout or gives similar results to an instrument that has already been validated then its results are considered valid and reliable.
The original instrument has already been validated for content in the United States, a process in which its content validity was defined through expert opinion [ 30].
The ridge gap waveguide has already been validated for 10-20 GHz using conventional fabrication methods.
The architecture of the ICAL trigger scheme has already been validated and the results are reported in a previous paper.
Similar(7)
While the depression questions have already been validated [ 27], validation of those on anxiety and anger control is currently underway.
In the present study, the decision was made only to evaluate discriminative validity because the scales employed have already been validated for Brazilian Portuguese [ 7, 8, 12, 17].
Although a large number of insight instruments have already been validated for patients with schizophrenia, their process of validation has often used small study samples.
For pragmatic reason, we excluded studies that aimed to carry out further testing of risk models systems that had already been validated once and reported, as there are several validation studies for commonly used scores such as PSI and CURB-65.
This model had already been validated in a previous study.
More suggestions(18)
has already been illustrated
has already been replicated
has already been substantiated
has already been ascertained
has already been verified
has now been validated
has already been authenticated
has already been demonstrated
has already been investigated
has already been evaluated
has earlier been validated
has already been ratified
has previously been validated
has already been confirmed
had earlier been validated
have previously been validated
has already been approved
has ever been validated
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